Naturally Colored Lime Dessert

This naturally colored vegan Blue Moon Lime Tart combines the nostalgic flavor of blue moon ice cream with a tangy lime twist. The vibrant two-layer filling sits atop a simple cookie crust, creating a stunning dessert that requires zero baking time and wows everyone at the table.

I first created this tart when searching for a showstopping dessert that would appeal to all my vegan and non vegan friends alike. The gorgeous blue color never fails to elicit wide eyes and delighted expressions when I bring it to the table.

Ingredients

• Vegan cookies: create the perfect crispy foundation regardless of which variety you choose
• Vegan butter: binds the crust together while adding richness opt for a high quality plant butter for best flavor
• Coconut milk: provides the creamy base for both layers choose full fat for the richest texture
• Agave syrup: adds natural sweetness without overwhelming the lime flavor
• Fresh lime juice: delivers bright tangy notes that balance the sweetness
• Agar powder: works as the vegan gelatin alternative ensuring perfect slices every time
• Blue spirulina powder: creates the stunning natural blue color with no artificial ingredients
• Vanilla extract: enhances the flavor profile of the blue layer
• Fresh berries: add beautiful garnish and complementary flavors

Step-by-Step Instructions

Create the Cookie Base:

Process cookies into fine crumbs using a food processor until no large pieces remain. Mix thoroughly with melted vegan butter until the mixture resembles wet sand. Press firmly and evenly into your tart pan making sure to push the mixture up the sides. Freeze for 15 minutes to set the crust quickly.

Prepare the Lime Layer:

Combine coconut milk and agar powder in a saucepan stirring continuously until completely dissolved. Bring the mixture to a boil and continue cooking for two minutes to activate the agar properly. Remove from heat and stir in agave syrup and freshly squeezed lime juice until completely incorporated. Pour this tangy mixture over your chilled crust creating an even layer. Refrigerate until firm about one hour.

Create the Blue Moon Layer:

Dissolve the blue spirulina powder in a small amount of water ensuring no clumps remain. In a separate saucepan combine coconut milk and agar stirring until dissolved then bring to a boil for two minutes. Remove from heat and add agave syrup vanilla extract and the dissolved spirulina mixture. Stir gently until the color is uniform throughout. Carefully pour this vibrant blue mixture over the set lime layer. Return to refrigerator and chill for at least two hours.

Garnish and Serve:

Once completely set remove the tart from the pan by gently pushing up from the removable bottom. Arrange fresh blueberries blackberries and lime slices decoratively on top. Slice with a sharp knife dipped in hot water for clean cuts.

Pin it

Blue spirulina has become my absolute favorite natural food coloring. The first time I used it my entire family was convinced I had used artificial dyes until I showed them the powder. Its vibrant hue transforms ordinary desserts into extraordinary ones without any additives.

Perfect Texture Tips

The secret to this tart's perfect sliceable texture lies in the proper activation of agar powder. Unlike traditional gelatin agar needs to be boiled to reach its full setting potential. Make sure to bring your mixture to a complete boil and maintain it for the full two minutes while stirring constantly. This ensures your tart will set properly with a smooth texture that holds its shape when sliced.

Pin it

Storage and Make-Ahead

This Blue Moon Lime Tart stores beautifully in the refrigerator for up to 5 days making it an excellent make ahead dessert option. Keep it covered to prevent it from absorbing other flavors from your refrigerator. For the best presentation add the fresh fruit garnishes just before serving. The tart can also be frozen for up to one month simply thaw overnight in the refrigerator before serving.

Creative Variations

While this recipe features a classic cookie crust you can easily customize it to suit your preferences. Try an oreo style crust for a cookies and cream twist or use graham crackers for a more traditional pie base. Gluten free cookies work perfectly for those with dietary restrictions. The filling can also be adapted by swapping lime for lemon or using different natural colorings like matcha powder butterfly pea flower or beetroot for vibrant alternatives to the blue layer.

Serving Suggestions

This tart makes a stunning centerpiece dessert for any occasion. Serve small slices with a dollop of coconut whipped cream on the side for added luxury. For a summer gathering pair it with fresh berries and mint sprigs. The vibrant colors make it especially perfect for baby showers ocean themed parties or any celebration where you want to make a visual impact with minimal effort.

Frequently Asked Questions

→ Can I use a different type of crust for this tart?

Yes, you can use any crunchy cookies or granola for the crust. Alternatively, shortcrust pastry or gluten-free almond date crust also works wonderfully.

→ What is spirulina, and can I omit it?

Spirulina is a blue-green algae powder that naturally colors the top layer of this tart. You can skip it, but the vibrant blue hue will not be present.

→ How do I ensure the agar sets properly?

Ensure you use 100% pure agar powder and follow the instructions on dissolving and boiling. Agar needs to be cooked for at least 1-2 minutes to activate its setting properties.

→ Can I substitute coconut milk in this tart?

Yes, you can use any rich non-dairy milk or cream. Adjust the sweetness if your substitute is already sweetened.

→ How long does this tart need to chill before serving?

The lime layer requires about 1 hour to set, and the blue layer needs an additional 2 hours in the refrigerator to firm completely.

→ Can I prepare this tart ahead of time?

Absolutely! This tart can be made a day in advance and stored in the refrigerator until ready to serve.